Spring's Journey North Report Your Sightings Teacher's Manual Search Journey North |
MonarchsKaren DeCrane (pjester@neosplice.com)Tue, 3 Mar 1998 14:57:11 -0500
photoperiod probably determine when they leave. If they leave too early, they can die because of bad weather. If they leave too late, they can die because of lack of food, the plants may be done blooming, or the weather is too hot. They also may not find enough butterflies to mate with, if the main body has gone on ahead.
B.J. DeCrane
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